Defense ministry officials in Greece said an air force fighter jet crashed into the eastern Aegean Sea after returning from a patrol on Thursday.
The officials told state-run television that the Mirage 2000-5 crashed north of the island of Skyros. They gave no information about the possible cause of the crash.
Greece's defense minister Panos Kammenos announced on his Twitter account that the Greek military pilot died when the jet crashed around 12:15 local time (0915GMT).
He also wished condolences to the family of the late pilot.
Earlier, the Defense Ministry said the Mirage 2000-5 aircraft went down northeast of Skyros Island, east of the Eyvia peninsula, northeast of Athens.
